fix(cli): clistat: accept positional arg for stat disk cmd (#8911)

cli/stat.go

@@ -233,8 +233,16 @@ func (*RootCmd) statDisk(s *clistat.Statter) *clibase.Cmd {
 		},
 		Handler: func(inv *clibase.Invocation) error {
 			pfx := clistat.ParsePrefix(prefixArg)
+			// Users may also call `coder stat disk <path>`.
+			if len(inv.Args) > 0 {
+				pathArg = inv.Args[0]
+			}
 			ds, err := s.Disk(pfx, pathArg)
 			if err != nil {
+				if os.IsNotExist(err) {
+					// fmt.Errorf produces a more concise error.
+					return fmt.Errorf("not found: %q", pathArg)
+				}
 				return err
 			}
 

cli/stat_test.go

@@ -170,4 +170,16 @@ func TestStatDiskCmd(t *testing.T) {
 		require.NotZero(t, *tmp.Total)
 		require.Equal(t, "B", tmp.Unit)
 	})
+
+	t.Run("PosArg", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitShort)
+		t.Cleanup(cancel)
+		inv, _ := clitest.New(t, "stat", "disk", "/this/path/does/not/exist", "--output=text")
+		buf := new(bytes.Buffer)
+		inv.Stdout = buf
+		err := inv.WithContext(ctx).Run()
+		require.Error(t, err)
+		require.Contains(t, err.Error(), `not found: "/this/path/does/not/exist"`)
+	})
 }